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| author | Nathan Zimmer <nzimmer@sgi.com> | 2013-04-15 09:53:34 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-08-01 12:13:26 -0600 |
| commit | fb69749415ae2bd7c3180605d01a5a39f3bd988f (patch) | |
| tree | c73b96ce90568ef0a1ea59c977cf244275e5dee8 | |
| parent | 0c2df13d11dd91a1c3933dcc8faa98f2b59a5793 (diff) | |
| download | blktrace-fb69749415ae2bd7c3180605d01a5a39f3bd988f.tar.gz | |
btreplay: use sysconf to get the number of configured cpus
We should use the standard methods for getting the number of cpus in the
system when they are available. It is good practice to leave the old ways in
place for people stuck on older systems.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Nathan Zimmer <nzimmer@sgi.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | btreplay/btreplay.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/btreplay/btreplay.c b/btreplay/btreplay.c index 6f0ba63..fe6cd80 100644 --- a/btreplay/btreplay.c +++ b/btreplay/btreplay.c @@ -502,6 +502,9 @@ static inline void start_iter(void) */ static void get_ncpus(void) { +#ifdef _SC_NPROCESSORS_CONF + ncpus = sysconf(_SC_NPROCESSORS_CONF); +#else long last_cpu; cpu_set_t cpus; @@ -515,6 +518,7 @@ static void get_ncpus(void) if (CPU_ISSET( last_cpu, &cpus) ) ncpus = last_cpu; ncpus++; +#endif if (ncpus == 0) { fatal(NULL, ERR_SYSCALL, "Insufficient number of CPUs\n"); /*NOTREACHED*/ |